Lindsay Lohan has engaged in her final public fight with father Michael Lohan-she’s getting a restraining order.

According to a report from the New York Post, the former child star is “taking out an order of protection. He’s behaving so erratically that she’s terrified he’ll do something to her. She’s contacted her lawyer to arrange this.”

Lindsay’s 14-year-old sister, Ali, “already has an order of protection against him, as does [mom] Dina. No one is speaking with him until he gets help,” a spy says.